Combined deflection yoke and housing

ABSTRACT

In a cathode ray tube system a combined deflection yoke and housing includes an annular core member having first and second end portions with a first annular mounting ring having ear members and contacting the first end portion and a second annular mounting ring having tab members and contacting the second end portion with a shield member surrounding the core member and affixed to the first and second mounting rings, and a plurality of wire turns wrapped in toroidal fashion about the shield and core members and first and second mounting rings. A flexible plastic body member telescopes over the shield member and first and second mounting rings and includes a large diameter portion having peripheral slots formed for engagement with the ear members of the first annular mounting ring and a small diameter portion with a planar portion formed to provide an apertured mounting ring for engagement with the second annular mounting ring and the neck portion of a cathode ray tube.

United States Patent [72] Inventor Charles Edward Torsch Rochester, N.Y.

[21] Appl. No. 851,300

[22] Filed Aug. 19, 1969 [45] Patented Mar. 9, 1971 [73] Assignee Sylvania Electric Products, Inc.

[54] COMBINED DEFLECTION YOKE AND HOUSING [5 6] References Cited UNITED STATES PATENTS 3,390,363 6/1968 Weyrich et al Primary Examiner-G. Harris Attorneys-Norman J. OMalley, Donald R. Castle and Thomas H. Buffton ABSTRACT: In a cathode ray tube system a combined deflection yoke and housing includes an annular core member having first and second end portions with a first annular mounting ring having ear members and contacting the first end portion and a second annular mounting ring having tab members and contacting the second end portion with a shield member surrounding the core member and affixed to the first and second mounting rings, and a plurality of wire turns wrapped in toroidal fashion about the shield and core members and first and second mounting rings. A flexible plastic body member telescopes over the shield member and first and second mounting rings and includes a large diameter portion having peripheral slots formed for engagement with the ear members of the first annular mounting ring and a small diameter portion with a planar portion formed to provide an apertured mounting ring for engagement with the second annular mounting ring and the neck portion of a cathode ray tube.

Patented March 9, 1971 5 Sheets-Sheet 1 INVENTOR. CHARLES E. TORSCH ATTORNEY Patented U March 9, 3971 I 3,569,881

a Sheets-Sheet 2 INVENTOR. CHARLES E. TORSCH ATTORNEY (COMBINED DEFLECTION YOKE AND HOUSING BACKGROUND OF THE INVENTION In general, cathode ray tube systems include a cathode ray tube having one or more electron beams and a deflection yoke associated with the cathode ray tube for effecting horizontal and vertical deflection of the electron beam. The deflection yoke is ordinarily telescoped over the neck portion of the cathode ray tube and firmly but adjustably affixed thereto. Thus, the deflection yoke requires some form of housing for effectingthe above-mentioned adjustable features.

Further, the deflection yoke housing should include such desirable features as ease of insertion and removal of the deflection yoke therefrom, as well as ease of electrical access to the deflection yoke. Moreover, the deflection yoke housing should not only provide mechanicalprotection for the deflection yoke but also electrical protection for personnel associated with operation or repair of the apparatus.

Unfortunately, the known prior art. deflection yoke and deflection yoke housing apparatus leaves much to be desired for any one of a number of reasons. Excessive cost, undue structural complexity, lack of convenient electrical coupling capability and lack of mechanical protective capability are all undesirable features of which one or more are found in known deflection yoke and deflection yoke housing apparatus, such as US. Pat. No. 3,363,206 issued Jan. 9, 1968 to R. S. Joseph.

OBJECTS AND SUMMARY OF THE INVENTION An object of the present invention is to provide enhanced deflection yoke and deflection yoke housing apparatus for a cathode ray tube system. Another object of the invention is to provide improved electrical coupling and protective capabilities for deflection yoke and deflection yoke housing apparatus. Still another object of the invention is to provide improved mechanical protection and attachment means for deflection yoke and deflection yoke housing apparatus.

These and other objects, advantages and capabilities thereof are achieved inone aspect of the invention by a deflection yoke and deflection yoke housing combination which includes an annular core member having first and second end portions with first and second annular mounting rings in contact therewith and affixed to a' shield member surrounding the core member whereon toroidal wire turns are and a shield member 23. Preferably, a circuit board is disposed adjacent the second annular mounting ring 21.

The first annular mountingring 19, best seen in FIGS. 1 and 3, is substantially circular in form and includes a horizontal axis H-li' and a vertical axis V-V (shown in FIG. 3). A pair of ear members 27 are disposed in spaced relationship along each one of the horizontal and vertical axes, H-I'I' and V-V'.

A plurality of wire receiving slots 29 extend intermediate adjacent ones of the pairs of ear members 27 and a hook member 31 is in alignment with each one of the ear members 27. i

The second annular mounting ring 21, best seen in FIGS. 1 and 4, is also substantially circular in form and includes a horizontal axis I-I-I'I and a vertical axis V-V'. A pair of tab members 33 are disposed in spaced relationship along each one of the horizontal and vertical axes, H-H' and V-V'. Each one of the pair of tab members 33 includes a rearwardly extending portion 35, an outwardly extending portion 37, and a forwardly extending ortion 39 which includes an engagement notch 41. A pluralit of Wire receiving grooves 43 extend intermediate adjacent ones of the tab members 33.

wrapped. A flexible plastic body member has a relatively large diameter portion formed for engagement with the first mounting ring and a relatively small diameter portion including a planar portion forming an apertured mounting ring 'for telescoping over the neck portion of the cathode ray tube and centrally positioning the relatively small diameter portion of the body member.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is an exploded perspective view of deflection yoke and deflection yoke housing apparatus;

FIG. 2 is an elevational view, partly in section, of FIG. 1 taken along the line 2-2;

FIG. 3 is a front elevational view, partly in section, of FIG. 1 taken along the line 3-3; and

F 1G. 4 is a rear elevational view, partly in section,- of FIG. 1 taken along the line 4-4.

DESCRIPTION OF THE PREFERRED EMBODIMENT The shield member 23 is disposed in surrounding relationship to the core member 13 and intermediate the first and second annular mounting rings 19 and 21. The shield member 23 includes a plurality of circumferentially spaced slots 45 formed for engagement with the hook members 31 of the first annular mounting ring 19. The shield member 23'also includes a plurality of circumferentially spaced protuberances 47 formed for engagement with the notches 41 of the tab members 33 of the second annular mounting ring 21. A plurality of spaced inwardly projecting pressure members 49 are disposed about the circumference of the shield member 23. 1

A circuit board 25 includes a central aperture 51formed for passage therethrough of the neck portion 9 of a cathode ray tube 11 (shown on FIG. 2) and a plurality of circumferentially spaced openings 53. The circuit board 25 is substantially circular in form except for an outwardly extending protuberance 55 having a hole 57 therethrough and includes printed electrical circuitry 59 on at least one side thereof.

As to the deflection yoke assembly 5, the shield member 23 surrounds the core member 13 with the inwardly projecting pressure members 49. urging the core member 13 forward. The first annular mounting ring 19 contacts the .first end portion 15 of the core member 13 and the hook members 31 of the first annular mounting ring 13 and the. slots 45 of the shield member 23 are brought into engagement.

The second annular mounting ring 21. contacts the second end portion 17 of the core member 13-with the forward extending portion 39 of the pairs of tab members 33 flexing and urging the core member 13 forward. The notches 41 of the pairs of tab members 33 and the spaced protuberances of the shield member 23 are brought into engagement whereupon the pairs of ear members 27 and tab members 33 are brought into alignment by the. slots 45 and protuberances 47 of the shield member 23. g

The circuit board 25 is engaged with the second annular mounting ring 21 by passage of the rearwardly extending portion 35 of the tab members 33 through the spaced openings 53. The outwardly extending portion 37 of the tab members 33 is slightly offset from the rearwardly extending portion 35 whereupon the circuit board 25 is held in spaced relationship from the wire receiving grooves 43 of the second annular mounting ring 21. Thus, wire disposed within the wire receiving grooves 43 is protected from deleterious distortion by the circuit board 25.

Also, it should be noted that the ear members 27 of the first annular mounting ring 19 extend outwardly from and forwardly thereof. The forwardly extending portion serves to space any wire within the wire receiving slots 29 from a planar surface, thereby providing protection of the wires from undesired displacement and distortion. The outwardly extending portion of the ear members 27 is formed for engagement with the deflection yoke housing 7 as will be explained hereinafter.

Further, the shield member 23 is preferably of a flexible plastic material to facilitate the engaging relationship of the first and second annular mounting rings 19 and 21. However, it is to be noted that metals such as copper and chromium are also suitable materials for the shield member 23.

As can best be seen in FIG. 2, a plurality of wire turns 61 are wrapped in toroidal fashion about the annular core member 13, first and second annular mounting rings 19 and 21, and shield member 23. The wire turns 61 normally include a number of end portions (not shown),which are mechanically affixed to the previously-mentioned outwardly extending portions 37 of thepairs of tab members 33 on the second annular mounting ring 21. Thus, the outwardly extending portions 37 of the tab members 33 facilitate mechanical coupling of the wire turns 61.

' Telescoping over and intimately engaging the deflection yoke assembly 5, is the deflection yoke housing 7. The deflection yoke housing 7 includes a relatively large diametrical portion 63 having a plurality of peripheral spaced slots 65, a conical-shaped portion 67 having at least one formed aperture 69, and a relatively small diametrical portion 71 having a substantially planar portion 73.

The peripheral spaced slots 65 of the large diametrical portion 63 are formed for engagement with the outwardly extending portion of the pair of ear members 27 of the first annular mounting ring 19. Also, the formed aperture 69 of the conicalshaped portion 67 is formed to receive the protuberance 55 of the circuit board 25. Thus, the 'hole 57 of the protuberance 55, in conjunction with the formed aperture 69 of the conicalshaped portion 67, serve to provide interior access for electrical coupling of external wires to the wire turns 61 of the deflection yoke assembly 5.

The substantially planar portion 73 of the relatively small diametrical portion 71 serves to provide a support for the deflection yoke assembly since the rearwardly extending portion 35 of the tab members 33 extend through the openings 53 of the circuit board 25. This rearwardly extending portion 35 contacts the inner surface of the planar portion 73 to provide the desired support for the yoke assembly 5. Moreover, the rearwardly extending portion 35 serves to space the circuit board 25 from the planar portion 73 and the planar portion 73 prevents attending technicians from physically contacting the electrical circuitry 59 on the circuit board 25.

The substantially planar portion 73 of the small diametrical portion 71 is formed to provide an apertured mounting ring 75 (See FIG. 2) suitable for telescoping engagement with the neck portion 9 of a cathode ray tube 11. The mounting ring 75 includes a forward extending portion 77 and a rearward extending portion 79.

The forwardly extending portion 77 of the mounting ring 75 is adapted for centrally locating the deflection yoke assembly 5 by peripheral contact with the circuit board 25. The rearwardly extending portion 79 is in the form of flexible segments having an external shoulder 81 formed to provide a channel 83 intermediate the external shoulder 81 and the substantially planar portion 73 of the relatively small diametrical portion A clamp member 85 seats in the channel 83 and is laterally confined by the external shoulder 81 and the planar portion 73. In this manner, a firm but adjustable attachment of the deflection yoke housing 7 to the neck portion 9 of the cathode ray tube 11 is achieved. This firm attachment is insured without fear of undesired movement due to sliding of the clamp member 85 on the rearwardly extending portion 79.

Further, a magnet holding means 87 is formed on the outer surface of the substantially planar portion 73 of the relatively small diametrical portion 71. This magnet holding means 87 serves to facilitate attachment of a magnet, such as a blue lateral magnet common to color television receivers. Obviously, such a magnet holding means 87 is in the interest of convenience rather than necessity and is in no manner a requirement to satisfactory operation of the apparatus.

Thus, there has been provided combined deflection yoke and deflection yoke housing apparatus suitable for employment with a cathode ray tube system. The unique combination provides both electrical and mechanical protection for the deflection yoke assembly as well as electrical protection for personnel associated with the apparatus. Also, the apparatus facilitates electrical and mechanical coupling of the deflection yoke assembly and facilitates rapid assembly of the deflection yoke and deflection yoke housing. Moreover, the apparatus includes a firm but adjustable means for attachment to a cathode ray tube.

While there has been shown and described what is at present considered the preferred embodiment of the invention, it will be obvious to'those skilled in the art that various changes and modifications may be made therein without departing from the invention as defined by the appended claims.

Iclaim:

1. In a cathode ray tube deflection system, a toroid deflection yoke and housing comprising in combination:

an annular core member having first and second substantially circular end portions; 4

a first annular mounting ring contacting said first end portion of said core member, said ring including a plurality of ear members;

a second annular mounting ring contacting said second end portion of said core member;

a shield member surrounding said core and affixed to said first and second mounting rings;

a plurality of turns of wire wrapped in toroid fashion about said shield member and said affixed first and second mounting rings; and

a hollow cylindrical flexible plastic body member telescoped over said shield member and first and second mounting rings, said body member having a relatively large diametrical portion with spaced peripheral slots formed for engagement with said ear portions of said first annular mounting ring and a relatively small diametrical portion with a substantially planar portion forming an apertured mounting ring for overlying engagement with the neck portion of a cathode ray tube and central positioning and support of said second annular mounting ring.

2. The combination of claim lwherein said first annular mounting ring includes horizontal and vertical axes with a pair of ear members disposed along each of the horizontal and vertical axes, each of said ear members extending forwardly of and outwardly from said mounting ring.

3. The combination of claim 1 wherein said first annular mounting ring includes a plurality of wire receiving slots intermediate said ear members.

4. The combination of claim 1 wherein said second annular mounting ring includes a plurality of tab members having rearwardly and outwardly extending portions and a plurality of forwardly extending members.

5. The combination of claim 1 wherein said second annular mounting ring includes horizontal and vertical axes and a pair of tab members disposed along each of said axes.

6. The combination of claim l'wherein said shield member is formed from a plastic material.

7. The combination of claim 1 wherein said shield member is formed from a metal material.

8. The combination of claim 1 wherein said shield member is formed of a metal selected from the group consisting of copper and aluminum.

9. The combination of claim 1 wherein said second annular mounting ring includes a plurality of circumferentially spaced tab members with a plurality of wire receiving grooves therebetween.

10. The combination of claim 1 wherein said second annular mounting ring includes a plurality of tab members having rearwardly and outwardly extending portions with said outwardly extending portions formed for attachment thereto of said wire.

11. The combination of claim 1 wherein said second annular mounting ring includes a plurality of forwardly extending members formed for engagement with said shield member and contacting said core member.

12. The combination of claim 1 wherein said apertured mounting ring of said plastic body member includes a plurality of segments extending rearwardly of said planar. portion with said segments having an external shoulder forming a channel intermediate said shoulder and said planar portion whereby said channel forms a positive means for locking said segments to said neck portion of said cathode ray tube.

13. The combination of claim 1 including a substantially annular circuit board formed to telescopeover said apertured mounting ring of said plastic body member and disposed intermediate said second annular mounting ring and said planar portion of said plastic body member.

14. The combination of claim 1 wherein said planar portion of said small diametrical portion includes a magnet holding means. i t

15. The combination of claim 13 wherein said second annular mounting ring includesa plurality of tab members having rearwardly and outwardly extending portions and said annular circuit board is formed forengagement with said rearwardly extending portions of said mounting ring.

. 16. The combination of claim 13 wherein said second annular mounting ring includes a plurality of tab members haying rearwardly and outwardly extendingtab members and said substantially annular printed circuit board includes circumferentially spaced openings formed to receive said rearwardly extending tab members.

17. The combination of claim 13 wherein said substantially annular printed circuit board includes a plurality of circumferentially spaced openings, said second annular mounting ring includes circumferentially spaced tab members each having a rearwardly extending portion formed to extend through an opening of said circuit board and contact said planar portion of said plastic body member to effect a spacing intermediate said circuit board and plastic body member.

18. The combination of claim 13, wherein said substantially annular printed circuit board includesa protuberance having a hole therethrough and said relatively small diametrical portion of said plastic body member includes a perforation formed to receive said protuberance whereby said hole and perforation combine. to provide access means for external electrical connection to said wire wrapped on said core member. 19. The combination of claim 13 wherein said neck engaging portion of said relatively small diametrical portion and substantially planar portion includes a plurality of segments extending. rearwardly of said body member, said segments including an external shoulder forming a channel intermediate said shoulder and said planar portion of said body member whereby said channel forms a positive locking means for affixing said segments to the neck portion of a cathode ray tube with a clamping means.

20. In a cathode ray tube deflectionsystem employing a cathode ray tube having a neck portion and a toroid-wound deflection yoke having an annular core member with first and rm s;

a sub tantially annular shaped printed circuit board having a central aperture and printed circuit pattern on at least one surface and external extending protuberance having a hole; and i a hollow cylindrical body member of flexible plastic having a relatively large diametrical portion including peripheral slots formed for engagement with said ear members of said first annular mounting ring and a relatively small diametrical portion and planar portion; said planar portion having an apertured mounting ring formed to telescope over and engage the neck portion of a cathode ray tube.

21. The combination of claim 20 wherein said first annular mounting ring includes horizontal and vertical axes and a pair of ear members diametrically disposed on said ringalong each of said horizontal and vertical axes.

22. The combination of claim 20 wherein said ear members are circumferentially spaced and formed for engagement with said peripheral slots of said relatively large diametrical portion of said body member and said first annular mounting ring includes a plurality of wire receiving slots intermediate said ear members.

23. The combination of claim 20 wherein said substantially annular shaped circuit board includes a plurality of circumferentially spaced openings formed-for engagement with said rearwardly extending portions of said tab members of said second annular mounting ring.

24. The combination of claim 20 wherein said substantially annular shaped circuit board includes a plurality of circumferentially spaced openings and said rearwardly extending portions of said tab members extend through said openings and contact said planar portion of said body member whereby a space is provided intennediate said circuit board and said planar portion of said body member.

25. The combination of claim 20 wherein said apertured 

1. In a cathode ray tube deflection system, a toroid deflection yoke and housing comprising in combination: an annular core member having first and second substantially circular end portions; a first annular mounting ring contacting said first end portion of said core member, said ring including a plurality of ear members; a second annular mounting ring contacting said second end portion of said core member; a shield member surrounding said core and affixed to said first and second mounting rings; a plurality of turns of wire wrapped in toroid fashion about said shield member and said affixed first and second mounting rings; and a hollow cylindrical flexible plastic body member telescoped over said shield member and first and second mounting rings, said body member having a relatively large diametrical portion with spaced peripheral slots formed for engagement with said ear portions of said first annular mounting ring and a relatively small diametrical portion with a substantially planar portion forming an apertured mounting ring for overlying engagement with the neck portion of a cathode ray tube and central positioning and support of said second annular mounting ring.
 2. The combination of claim 1 wherein said first annular mounting ring includes horizontal and vertical axes with a pair of ear members disposed along each of the horizontal and vertical axes, each of said ear members extending forwardly of and outwardly from said mounting ring.
 3. The combination of claim 1 wherein said first annular mounting ring includes a plurality of wire receiving slots intermediate said ear members.
 4. The combination of claim 1 wherein said second annular mounting ring includes a plurality of tab members having rearwardly and outwardly extending portions and a plurality of forwardly extending members.
 5. The combination of claim 1 wherein said second annular mounting ring includes horizontal and vertical axes and a pair of tab members disposed along each of said axes.
 6. The combination of claim 1 wherein said shield member is formed from a plastic material.
 7. The combination of claim 1 wherein said shield member is formed from a metal material.
 8. The combination of claim 1 wherein said shield member is formed of a metal selected from the group consisting of copper and aluminum.
 9. The combination of claim 1 wherein said second annular mounting ring includes a plurality of circumferentially spaced tab members with a plurality of wire receiving grooves therebetween.
 10. The combination of claim 1 wherein said second annular mounting ring includes a plurality of tab members having rearwardly and outwardly extending portions with said outwardly extending portions formed for attachment thereto of said wire.
 11. The combination of claim 1 wherein said second annular mounting ring includes a plurality of forwardly extending members formed for engagement with said shield member and contacting said core member.
 12. The combination of claim 1 wherein said apertured mounting ring of said plastic body member includes a plurality of segments extending rearwardly of said planar portion with said segments having an external shoulder forming a channel intermediate said shoulder and said planar portion whereby said channel forms a positive means for locking said segments to said neck portion of said cathode ray tube.
 13. The combination of claim 1 including a substantially annular circuit board formed to telescope over said apertured mounting ring of said plastic body member and disposed intermediate said second annular mounting ring and said planar portion of said plastic body member.
 14. The combination of claim 1 wherein said planar portion of said small diametrical portion includes a magnet holding means.
 15. The combination of claim 13 wherein said second annular mounting ring includes a plurality of tab members having rearwardly and outwardly extending portions and said annular circuit board is formed for engagement with said rearwardly extending portions of said mounting ring.
 16. The combination of claim 13 wherein said second annular mounting ring includes a plurality of tab members having rearwardly and outwardly extending tab members and said substantially annular printed circuit board includes circumferentially spaced openings formed to receive said rearwardly extending tab members.
 17. The combination of claim 13 wherein said substantially annular printed circuit board includes a plurality of circumferentially spaced openings, said second annular mounting ring includes circumferentially spaced tab members each having a rearwardly extending portion formed to extend through an opening of said circuit board and contact said planar portion of said plastic body member to effect a spacing intermediate said circuit board and plastic body member.
 18. The combination of claim 13 wherein said substantially annular printed circuit board includes a protuberance having a hole therethrough and said relatively small diametrical portion of said plastic body member includes a perforation formed to receive said protuberance whereby said hole and perforation combine to provide access means for external electrical connection to said wire wrapped on said core member.
 19. The combination of claim 13 wherein said neck engaging portion of said relatively small diametrical portion and substantially planar portion includes a plurality of segments extending rearwardly of said body member, said Segments including an external shoulder forming a channel intermediate said shoulder and said planar portion of said body member whereby said channel forms a positive locking means for affixing said segments to the neck portion of a cathode ray tube with a clamping means.
 20. In a cathode ray tube deflection system employing a cathode ray tube having a neck portion and a toroid-wound deflection yoke having an annular core member with first and second end portions, a deflection yoke assembly and housing comprising in combination: a first annular mounting ring affixed to said first end portion of said annular core member, said ring having a plurality of ear members circumferentially spaced and extending forwardly of and outwardly from said ring; a second annular mounting ring affixed to said second end portion of said annular core member, said second ring having a plurality of tab members circumferentially spaced with rearwardly and outwardly extending portions; a plurality of turns of wire toroidally wrapped about said core member and first and second annular mounting rings; a substantially annular shaped printed circuit board having a central aperture and printed circuit pattern on at least one surface and external extending protuberance having a hole; and a hollow cylindrical body member of flexible plastic having a relatively large diametrical portion including peripheral slots formed for engagement with said ear members of said first annular mounting ring and a relatively small diametrical portion and planar portion; said planar portion having an apertured mounting ring formed to telescope over and engage the neck portion of a cathode ray tube.
 21. The combination of claim 20 wherein said first annular mounting ring includes horizontal and vertical axes and a pair of ear members diametrically disposed on said ring along each of said horizontal and vertical axes.
 22. The combination of claim 20 wherein said ear members are circumferentially spaced and formed for engagement with said peripheral slots of said relatively large diametrical portion of said body member and said first annular mounting ring includes a plurality of wire receiving slots intermediate said ear members.
 23. The combination of claim 20 wherein said substantially annular shaped circuit board includes a plurality of circumferentially spaced openings formed for engagement with said rearwardly extending portions of said tab members of said second annular mounting ring.
 24. The combination of claim 20 wherein said substantially annular shaped circuit board includes a plurality of circumferentially spaced openings and said rearwardly extending portions of said tab members extend through said openings and contact said planar portion of said body member whereby a space is provided intermediate said circuit board and said planar portion of said body member.
 25. The combination of claim 20 wherein said apertured mounting ring of said planar portion of said body member includes segmented members extending rearwardly of said body member, said segmented members having an external shoulder forming a channel intermediate thereto and said planar portion whereby said channel provides a positive locking means for a clamp applied thereto to effect attachment of the body member to the neck portion of a cathode ray tube. 